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Text and photos by Nick Baker, unless credited to others.
Copyright © Ecology Asia 2025

 
     
 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

   
   
 
Brook's House Gecko 
Hemidactylus brookii
   
   

Fig 1
  

Fig 2
  

Fig 3
  

Fig 4 
 

Fig 5

 

 

 

 

 

 

 

Family : GEKKONIDAE
Species : Hemidactylus brookii
Size (snout to vent) : up to 6.5 cm
Size (total length) : up to 8.4 cm
(Source : Grismer, 2011)

Hemidactylus brookii (Brook's House Gecko) is a wide-ranging, commensal lizard which occurs in many countries in Africa, parts of the Indian subcontinent, and parts of Southeast Asia, including Myanmar, Thailand, Peninsular Malaysia, Philippines, Borneo and Flores (Reptile Database, 2024). 

In Singapore four individuals were found in 2016 in a small area of a neighbourhood park (Groenewoud & Law, 2016). These may have been imported with gardening materials.

Although its original origins are disputed, it appears likely that the global range of this adaptable lizard has expanded as a consequence of human activities; the presence of eggs, hatchlings or adults is easily overlooked in cargo shipments aboard seagoing vessels.

In Southeast Asia this gecko is found mainly in or on man-made habitats including buildings, gazebos, drains and walls near artificial lighting. 

In Peninsular Malaysia there are records from the northern state of Perlis, Penang Island and Pangkor Island (Perak state). Presented here are new records from the Perak mainland at Gunung Lang in Ipoh, found in 2024. Gunung Lang comprises a public park at the base of a karst limestone hill; Hemidactylus brookii were found at the entrance to a cave, and on a nearby building.

The body colour of Hemidactylus brookii is typically light brown (although in other regions it can be quite variable).  Its head is relatively large, and elongate. Its toes all bear well-developed claws. 

Its dorsal surface bears 14-17 rows of densely-packed tubercles; these are described as 'large, keeled and trihedral' (Grismer, 2011). The dorsal surface of the tail also bears somewhat larger 'spinose' tubercles, which are more widely spaced. The presence of abundant tubercles is a useful identifying feature for the species.


Figs 1 and 2 : Two examples clinging to the vertical face and roof of a karst limestone cave at Gunung Lang, Ipoh, Perak, Peninsular Malaysia.

Fig 3 : A third example from Gunung Lang, clinging to the wall of a hut near the limestone cliff face.

Figs 4 and 5 : The large cave and cliff-face at Gunung Lang where Hemidactylus brookii is to be found.


References :

Grismer, L. L. (2011). Lizards of Peninsular Malaysia, Singapore, and their Adjacent Archipelagos. Their Description, Distribution, and Natural History. Edition Chimaira, Frankfurt am Main. 728 pp. 

David Groenewoud & Law Ing Sind. (2016). Brook’s house geckos at Admiralty Park. Singapore Biodiversity Records 2016: 60. National University of Singapore.


Links : Reptile Database